earth's crust

space

U+0020

apostrophe

U+0027

latin small letter a

U+0061

latin small letter c

U+0063

latin small letter e

U+0065

latin small letter h

U+0068

latin small letter r

U+0072

latin small letter s

U+0073

latin small letter t

U+0074

latin small letter u

U+0075